Highlight Expressions
Added a new function in the "Search" highlight menu. In the opened dialog window you can add as many text strings or regular expressions as you like. Each expression will be highlighted using a set text and background color.

You can set individual options for each expression, like

* Case sensitive
* Match whole words
* Regular expression

You can also set individual text and background color for each expression.

Hint on auto hidden panels
Added hints to auto hidden panels with no caption (only the image is visible).